Heel-tri



(No Model.)

C. W. GLIDDEN. HEEL TRIMMING'MACHINE.

B10877802.l Patented Jan. 31, 1888.

N. PETERS. Puma Lilhampher. washngmn. D C.

Thymian STATES uIATENT Trice.

CHARLES W. GLIDDEN, OE LYNN, ASSIGNOR TO JAMES W'. BROOKS, TRUSTEE, OF CAMBRIDGE, MASSACHUSETTS.

HEEL-TRIIVIWING MACH-HNE.

SPECIFICATION forming part of Letters Patent No. 377,302, dated January 31, 1888.

Application filed October '21, 1887. Serial No. 252,904. (No model.)

To all whom it may concern:

Be it known that I, CHARLns W. GLIDDEN, of Lynn, county of Essex, and State of Massachusetts, have invented an Improvement in Heel-Trimming Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings rcpresentinglike parts.

This invention is an improvement on the 1o apparatus described in United States Letters Patent No. 321,017, and has forits object to provide means whereby the edge of the knife may be presented to the heel to be trimmed at the proper or normal angle of presentation,

r 5 notwithstanding variations in sizes of heel being trimmed on the same machine, it being customary to trim by one machine heels varying from one-fourth to one-half of an inch in diameter, or across the heel from edge to edge.

The machine described in the said patent has a turntable mounted upon a trimmer-lever, and the turn-table has at its under side two studs,which enter two grooves of astationary plate, and the trimming-knife holder is made adjustable by means of a screw, so as to permit the edge of the knife to be so adjusted as to be exactly in line with the center on which the turn-table turns, in order that the cut made by the trimming knife shall be smooth and not cut into the heel and leave it rough, as would be the case were the edge of the knife not presented to the heel at the proper angle, or, as Ishall call it, normally To provide for heels of different sizes or of different diameter, or width across the bottom, the knife-holder is also made adjustable toward and from the nail-box in a line at right angles to the line of movement of the knifeholder on the ledge or tipping plate on which it is mounted.

In the practical use of the machine described in thesaidpatentithas been ascertained that the normal angle of presentation for the knife is gained only when trimming a heel of one of the medium sizes which the machine is adapted to trim, and with the smaller and with the larger sizes of heels it has been ascertained that the knife is not presented normally; but with the smaller sizes of heels the 5o edge of the knife is too much inturned to cut the heel, smoothly and properly, while with the larger sizes the edge of the knife is turned outwardly too much to do good work.

By experiment I have discovered that the normal or desired correct presentation of the edge of the knife to the heel and that the cutting-edge of the knife may always be maintained exactly in line with the center of rotation of the turn-table by mounting the bearing block or slide supporting the tipping plate 6o on which the knife-holder is made adjustable so that the said slide may be adj usted diagonally in or on the turn-table with relation to the direction of movement of the knife-holder on the tipping plate carried by the said slide, 55 such direction of movement of the slide causing the edge of the knife to be automatically carried forward and backward with relation to the turn-table and its center of rotation, according to the diameter of the heel being 7o trimmed, the slide moving, it will be remembered, toward and from the nail-box and heel under the control of a patterrrplate and a Spring.

My invention consists, essentially, in the combination, with a knife-holder and a plate in which it is made adjustable, of a bearingblock to support the plate on which the knifeholder is adj nstable, and a turn-table, the said bearing-block being made movable diagonally 8o l in the said turntable, substantially as will be described.

Another feature of my invention consists in a peculiar spring joint or connection between the nail-box and the top-lift plate.

Figure l in side elevation represents a sufficient portion of a heel-trimming machine to enable my invention to be understood; Fig. 2, a plan view of Fig. l, with the nail-box, knifeholder, and the flanged plate on which it is 9c adjusted removed, the pattern-plate shown by full lines being supposed to be of medium size, the dotted lines showing pattern-plates of the' maximum and minimum sizes. Fig. 3 is a top or plan view of the nail-box, part of the top- 95 lift plate being broken off. Fig. 4 is a side elevation, partially broken out, of the nail-box Vand top-lift plate; and Figs. 5, 6, and 7 are details, on an enlarged scale, of the devices instrumental in connecting the top-lift plate with 10o the nail-box.

The stationary cam-plate c, having grooves 9 10, the trimmer-lever a, the turn-table d, the knife e, knife-holder f, ear g, the screw m, the, nut n, to adjust the knife-holder, the ianged plate g, attached in usual manner to the arm j, free to tip in or on, the slide t', the nail-box B, the driver-plate A, and pattern-plates E and b, are and may be all as in United States Patent No. 321,017, wherein like letters are employed to designate like parts.

United States Patent No. 166,795, dated August 1-7, 1875, shows and describes quite fully the construction and operation of the turn-table plate, the stationary plate having the two grooves to receive theusual' rollers at the bottom of the turn-table, the knife-holder, and means for adjusting it to keep its edge atV the center of rotation of the turn-table. .In this present invention the groove or way in the top of the turn-table d for the reception of the foot of the bearing block or plate i is made diagonally through the said turn-table d, so that the said bearing-block is free to b e moved diagonally in the said turn'tablepaccording to the size of the pattern-plates being used, such movement of the bearingblock in the turntable resulting in carrying the edge of the knife forward or backward with relation to the direction of the travel of the turn-table about the heel in such manner as to maintain the edge of the knife practically at the center of rotation vof the turn-table plate, thus insuring, with heels of every size which maybe trimmed on the machine, that the edge of the knife is presented normally to the heel. The bearing-block z', or crossslide, as it has sometimes been called, is provided with a follower, D, having a roll, 2, which runs against the pattern-plate E, which, it will be understood, is exchangeable for heels of different sizes. Thisfollower is made adjustable on the bearing-block by suitable screws, which operate substantially as do the follower-adj usting devices' described in United States Patent No. 321,017, the adjusting devices herein shown being, however, somewhat different in construction; but such devices are not herein claimed, because they are the invention of Alvin D. Elliott.

The top-lift plate C is recessed at its rear end to receive the head of a hollow bolt, C, which is secured in the nail-box by a screw, h3, the said bolt serving as a fulcrum or pivot for the top-lift plate, the head of the bolt keeping the top-lift plate down upon the nail-box B. This hollow bolt receives in it a long spring, h, the lower end of which is fixed in the bolt by a plug, h4, and pin h2, the upperv end of the spring, as h', being bent at right angles and extended out through a slot, as 717, (see Fig. 7 in the top-lift plate, the said spring acting normally to keep the top=lift plate in position to cover the top of the usual nail-box;

yet the said spring permits the top-lift plate to be turned when the nail-box is to come against the end of the heel.

By employing along spring, such as shown, and holding itv very firmly, I am enabled to locked in position.

obtain a strong and durable spring of' sufficient power to correctly 'and quickly operate the top-lift plate, the length of the spring adding to its durability, for it is less liable to cut and break than a shorter spring, such as heretofore used.

'Ihe pattern-plate b, constituting the top. of the nail-box, is provided near its center with an undercut annular groove, (see Figs. 3 and 4,) the upper iiange of which, asin Fig. 3, is slotted at opposite points for the passage of a ypin or stud, 23, extended through the upper end of the shank Z of the nail-box, the said shank being common to United States Patents Nos. 166,765 and 321,017. The'pattern-plate b is applied to the upperend of the said shank when the said plate is first applied to the nailbox, and the said plate having been turned a quarter-turn to place the ends of the stud 23 in the annular groove referred to, the bolt Cz is inserted and the pattern-plate is firmly Thehead of the bolt C2 is slotted, as herein shown, at four places for the reception of aforked screwdriver,by which to turn the boltto wind the spring h tothe proper tension.

I have herein referred to the plate d as a socalled turn-table7 plate; but I do not desire to limit this my invention to a turn-table plate 'j ust such as shown, or as referred to in United States Patent No. 166,795.

I should consider as within the scope of my invention a machine having a plate d sup- IOO ported in any manner and having a movement about the heel to be trimmed in a heel-shaped path; and prior to this my invention I am not aware of any heel-trimming machine having mechanism or means, such as referred to, to

carry a knife or blade about the heel in a heelshaped path to trim the same,wherein, besides its movement, as stated, about the heel, and its movement toward and from the center of the heel, has also had given'to it-an additional movement or adjustment forward or backward with relation to the direction of travel of knifecarrying mechanism about the heel, to thus provide, as stated, for correctly presenting the edge of the knife to heels of several different sizes; so I do not desire to limit my invention to the exact devices shown for moving the knife or blade, as stated, but desire to include as in the scope of my inventionv any equivalent mechanism for accomplishing the same purpose.

I clain1- 1. In a heel-trimming machine, a turn-table plate on which the said knife-holder is made adjustable, combined with a bearing-plate or cross-slide, i, arranged and adapted to slide diagonally in or with relation to the turn-table, and with a pattern-plate and nail-box, substantially as described.

3. The nail-box, its attached tubular bolt 5 and inclosed spiral spring held therein at or near one end, the upper end of the spring eX- tending laterally from the bolt, combined With the top -lift plate, substantially as and for the purpose described.

lo 4. The nail-box, its shank having a stud or projection,23, combined with the plate b, having an annular groove, as described, to be entered by the said stud or projection, substantially as described.

15 5. The nail-box, its shank having a stud or projection, 23, combined with the plate b, having an annular groove, as described, to be entered by the said stud or projection, and with a bolt to hold the plate b at one side of the 2o said shank, substantially as described.

6. In a heel-trimming machine, a plate or device, as d, having a movement about the heel in a heel-shaped path, combined with a heel-trimming knife or blade, and support therefor, whereby the said knife or blade, be- 25 Sides its movement toward and from the heel. has also a movement backward and forward With relation to the direction of movement of the blade about the heel, to, as described, provide for the normal presentation of the cut- 3o ting-edge ofthe knife or blade to heels of different sizes, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES W. GLIDDEN.

Witnesses:

BERNIOE J. NoYEs, F. L. EMERY. 

